Add Yahoo as a preferred source to see more of our stories on Google. A Secret Service agent stands guard as US President Barack Obama answers questions during a town hall event at Benedict College in ...

A Secret Service agent stands guard as US President Barack Obama answers questions during a town hall event at Benedict College in Columbia, South Carolina, March 6, 2015.SAUL LOEB/AFP/Getty Images ...

The Secret Service assigns code names to U.S. presidents for security purposes. Here is a list of the top 10 Secret Service code names of U.S. presidents, along with the reasons why they were chosen.

First families get their Secret Service code names at the very beginning of a presidential campaign. Presidents get to choose from a list provided by the White House Communications Agency. The code ...